CN115425446B

CN115425446B - Connecting device for preventing live plugging

Info

Publication number: CN115425446B
Application number: CN202211372990.2A
Authority: CN
Inventors: 郑超
Original assignee: Guangzhou Xinnuoda Intelligent Equipment Co ltd
Current assignee: Guangzhou Xinnuoda Intelligent Equipment Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-01-24
Anticipated expiration: 2042-11-04
Also published as: CN115425446A

Abstract

The invention relates to the technical field of electrical connection equipment, and discloses a connecting device for preventing live plugging and unplugging, which comprises a socket part and a plug part, wherein the socket part comprises a socket shell and a socket protective cover, one end of the socket protective cover is hinged with the socket shell, a limiting bayonet is arranged in the socket protective cover, a locking assembly is arranged in the socket shell and comprises a plug and a power induction mechanism, the plug and the limiting bayonet are clamped with each other, the power induction mechanism drives the plug to be clamped with the limiting bayonet after sensing current, the front end of the plug part is also provided with the limiting bayonet which can be clamped with the plug, and the connecting device can effectively prevent electric arcs generated by plugging and unplugging actions of the socket part in a live state and also effectively prevent electric shock accidents of equipment maintenance or wiring personnel caused by misoperation.

Description

Connecting device for preventing live plugging

Technical Field

The invention relates to a plug connecting device, in particular to a connecting device capable of preventing live plugging.

Background

The cable plugging device mainly comprises a static socket and a movable plug, wherein the static socket is arranged on equipment such as a power distribution cabinet and an access box, the movable plug is arranged at a cable end, and power supply, signal transmission and the like are realized by the mutual matching plugging of the static socket and the movable plug.

Disclosure of Invention

Accordingly, the present invention is directed to provide a connecting device capable of effectively preventing a plug from being inserted and removed in a charged state of a socket portion.

The technical scheme of the invention is realized as follows:

the invention provides an anti-live-wire plugging and unplugging connecting device which comprises a socket part and a plug part, wherein the socket part comprises a socket shell and a socket protective cover, one end of the socket protective cover is hinged with the socket shell, a limiting bayonet is arranged in the socket protective cover, a locking assembly is arranged in the socket shell and comprises a plug pin and a power induction mechanism, the plug pin and the limiting bayonet are clamped and connected through a linkage assembly, the power induction mechanism drives the plug pin to be clamped and connected with the limiting bayonet through the linkage assembly after sensing current, the front end of the plug part is also provided with the limiting bayonet which can be clamped and connected with the plug pin, the linkage assembly comprises a movable block and a horizontal connecting rod, two sides of the movable block are connected with the inner wall of the socket shell in an up-and-down sliding mode, the plug pin is fixed at the top of the movable block, inclined sliding grooves are formed in the left side and the right side of the movable block, the connecting rod penetrates through the sliding grooves, two ends of the connecting rod are respectively abutted and connected with the power induction mechanism in a sliding mode.

Preferably, electric power induction mechanism includes electromagnetic ring, rand, magnetic core and reset spring, be equipped with the machine box in the socket shell, electromagnetic ring fixed mounting be in the machine box, the center of electromagnetic ring is equipped with the guiding hole, magnetic core horizontal slip wears to locate in the guiding hole, the rand is installed the rear end of magnetic core, reset spring overlaps to be established in the magnetic core outside and is located between rand and the electromagnetic ring, the front end of magnetic core with the connecting rod is "T" style of calligraphy and connects.

Preferably, the bottom of the movable block is also provided with a power-assisted spring, and the bottom of the movable block is connected with the inner wall of the case through the power-assisted spring.

Preferably, still include plug detection part, plug detection part includes electronic box, electric brake, circuit breaker and warning light are all installed on the electronic box, the inside fixed mounting of machine box has first metal contact piece, the rear of first metal contact piece is equipped with second metal contact piece and tilting mechanism, second metal contact piece pass through tilting mechanism with first metal contact piece butt, the side of being qualified for the next round of competitions of circuit breaker pass through the wire with first metal contact piece is connected, the inlet wire side of circuit breaker passes through the wire and is connected with second metal contact piece, the circuit breaker is connected with external power supply electricity, the warning light with the circuit breaker is connected.

Preferably, the turnover mechanism comprises a stroke detection plate, a rotating shaft and a torsion spring, the rotating shaft penetrates through the center of the stroke detection plate, two ends of the rotating shaft are rotatably connected with the inner wall of the case, two sides of the rotating shaft are connected with the inner wall of the case through the torsion spring, the second metal contact piece is installed at the bottom of the stroke detection plate, the stroke detection plate drives the second metal contact piece to be abutted to the first metal contact piece through the rotating shaft and the torsion spring, the plug part is provided with a guide protrusion, a guide groove matched with the guide protrusion is formed in the socket shell, and when the plug part is completely inserted into the socket part, the guide protrusion pushes the stroke detection plate to turn around the rotating shaft.

Preferably, the plug part includes the plug bush and the locking lantern ring, the direction arch sets up the outer wall of the locking lantern ring, the locking lantern ring cup joint in the telescopic outside of plug, the locking lantern ring with the plug bush rotates to be connected, work draw-in groove and maintenance draw-in groove have been seted up on the locking lantern ring surface, the telescopic outer wall of plug be equipped with the plastic shrapnel of work draw-in groove or maintenance draw-in groove joint.

Preferably, the outer wall of the plug sleeve is provided with a U-shaped fixing groove, and the plastic elastic sheet is inserted into the fixing groove.

Preferably, the plug part comprises a plug sleeve and a locking sleeve ring, the guide protrusion is arranged on the outer wall of the locking sleeve ring, the locking sleeve ring is sleeved on the outer side of the plug sleeve, an indicating block is arranged behind the guide protrusion and is rotatably connected with the outer wall of the plug sleeve, and when the indicating block rotates to be located on the same straight line with the guide protrusion, the indicating block can pass through the guide groove.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a connecting device for preventing live plugging, which is characterized in that after a power supply is switched on, a power induction mechanism induces current to drive a movable block to drive a plug pin to move upwards, the plug pin extends into a limiting bayonet of a protective cover, the plug pin and the limiting bayonet are mutually occluded and locked to limit the socket protective cover to be opened in a live state, and a plug part cannot be plugged; after the outage, electric power induction mechanism stop work, electric power induction disappears, and the spring resets, and the movable block drives the bolt and resets, and the spacing bayonet socket of bolt and protective cover breaks away from the interlock state, and the socket protective cover can be opened, and the plug part can insert the socket. After the plug part and the socket part are inserted and connected with a power supply, the power induction mechanism induces current to drive the movable block to drive the plug pin to move upwards, the plug pin extends into the limiting bayonet, and the plug pin and the limiting bayonet are mutually occluded and locked to limit the plug part to be pulled out; after the outage, power induction mechanism stop work, the movable block drives the bolt and resets, bolt and spacing bayonet socket break away from the interlock state, and the plug part can be extracted to effectively prevent the electric arc that the plug action of socket part under the electrified state produced, also effectively prevent that the maloperation from leading to overhaul of equipments or wiring personnel electric shock accident.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic perspective view of a first embodiment of the present invention;

FIG. 2 is a schematic diagram of an internal structure of a protecting cover of an interposer according to an embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of the locking assembly according to one embodiment of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the locking assembly when not powered according to the first embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating an internal structure of a locking assembly when powered on according to an embodiment of the present invention;

FIG. 6 is an exploded view of the middle plug portion according to the second embodiment of the present invention;

FIG. 7 is a schematic structural diagram illustrating an operating state of an interposer according to a second embodiment of the present invention;

FIG. 8 is a schematic structural view illustrating a maintenance state of the middle plug portion according to a second embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a third embodiment of the present invention, illustrating a working state of the middle plug;

FIG. 10 is a schematic structural view illustrating a maintenance state of the middle plug portion in the third embodiment of the present invention;

fig. 11 is a schematic structural diagram of an interposer detecting component according to an embodiment of the present invention.

In the figure, 1 socket part, 2 plug part, 3 socket shell, 4 socket protective cover, 5 limit bayonet I, 6 locking component, 7 bolt, 8 limit bayonet II, 9 electromagnetic ring, 10E type opening clamping ring, 11 magnetic core, 12 reset spring, 13 machine box, 14 movable block, 15 connecting rod, 16 sliding groove, 17 power-assisted spring, 18 electric box, 19 electric brake, 20 circuit breaker, 21 warning light, 22 first metal contact piece, 23 second metal contact piece, 24 lead I, 25 lead II, 26 stroke detection board, 27 rotating shaft, 28 torsion spring, 29 guide projection, 30 guide groove, 31 plug sleeve, 32 locking lantern ring, 33 working clamping groove, 34 maintenance clamping groove, 35 plastic elastic piece, 36, 37 indication block, 38 pin, 39 socket.

Detailed Description

In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 5, the invention provides an anti-live-plug connecting device, which comprises a socket part 1 and a plug part 2, wherein the socket part 1 comprises a socket housing 3 and a socket protective cover 4, one end of the socket protective cover 4 is hinged to the socket housing 3, a first limit bayonet 5 is arranged in the socket protective cover 4, a locking assembly 6 is arranged in the socket housing 3, the locking assembly 6 comprises a plug pin 7 clamped with the limit bayonet and an electric sensing mechanism, the electric sensing mechanism drives the plug pin 7 to be clamped with the limit bayonet through a linkage assembly after sensing current, the front end of the plug part 2 is also provided with a second limit bayonet 8 which can be clamped with the plug pin 7, the linkage assembly comprises a movable block 14 and a horizontal connecting rod 15, two sides of the movable block 14 are vertically and slidably connected with the inner wall of the socket housing 3, the plug pin 7 is fixed on the top of the movable block 14, two inclined sliding grooves 16 are formed in the left and right sides of the movable block 14, the connecting rod 15 penetrates through the sliding grooves 16, two ends of the connecting rod 15 are respectively abutted to the inner wall of the sliding groove 16, and the connecting rod 15 is slidably connected with the electric sensing mechanism.

The hinge joint between the socket protection cover 4 and the socket housing 3 is provided with a torsion spring 28, so that the socket protection cover 4 becomes a cover with elastic rotation capability, and when the external force is lost, the socket protection cover 4 can automatically rotate to cover the entrance of the socket housing 3. In a conventional state, the socket protective cover 4 is in a closed state, when the socket part 1 is powered on, the power induction mechanism induces current, then the plug pin 7 is driven to extend into the limiting bayonet I5, the plug pin and the limiting bayonet I are mutually meshed and locked, the socket protective cover 4 cannot be opened, and the plug part 2 is limited from being inserted; after the power is cut off, the power induction mechanism does not induce current, the plug pin 7 resets, the plug pin 7 is separated from the occlusion state with the first limiting bayonet 5, the socket protective cover 4 can be opened, and the plug part 2 can extend into the socket part 1 to complete plugging, so that the plug part 2 is ensured to be connected with the socket part 1 under the condition of no electricity; after the plugging is completed, the power supply is switched on again, the power induction mechanism senses current, then drives the plug pin 7 to stretch into the second limiting bayonet 8, the plug pin and the second limiting bayonet are mutually occluded and locked, and the plug part 2 is limited to be pulled out, so that electric arcs generated by plugging and pulling actions of the socket part 1 in a live state are effectively prevented, and equipment maintenance or electric shock accidents of wiring personnel caused by misoperation are also effectively prevented.

Electric power induction mechanism includes plug-type electromagnetism circle 9 of straight line, E type opening rand 10, magnetic core 11 and reset spring 12, be equipped with quick-witted box 13 in the socket shell 3, electromagnetism circle 9 fixed mounting is in the machine box 13, movable block 14 with sliding connection about the inner wall of machine box 13, the center of electromagnetism circle 9 is equipped with the guiding hole, 11 horizontal slip of magnetic core wears to locate in the guiding hole, E type opening rand 10 is installed the rear end of magnetic core 11, reset spring 12 cover is established in the magnetic core 11 outside and is located between E type opening rand 10 and the electromagnetism circle 9, the front end of magnetic core 11 with connecting rod 15 is "T" style of calligraphy and connects.

In the non-energized state, the connecting rod 15 is located at the left side of the movable block 14, i.e., at the top of the sliding groove 16, and the plug pin 7 is located at the lowest point below the entrance of the socket portion 1; after the plug part 2 and the socket part 1 are plugged and a power supply is started, the electromagnetic coil 9 starts to work, the magnetic core 11 horizontally moves to the right side under the action of magnetic force, the connecting rod 15 drives the right side of the movable block 14, namely the bottom position of the sliding groove 16, the movable block 14 drives the plug pin 7 to rise to the highest point, and the plug pin 7 extends into the limit bayonet II 8 to be occluded and locked to limit the plug part 2 from being pulled out; after the power is cut off, the electromagnetic ring 9 stops working, the magnetic core 11 is driven to move back leftwards under the action of the reset spring 12, the movable block 14 and the plug pin 7 are pulled to move downwards to reset through the connecting rod 15 matched with the sliding groove 16, the plug pin 7 is separated from the limit bayonet II 8, and the plug part 2 can be pulled out.

The bottom of the movable block 14 is also provided with an assisted spring 17, the bottom of the movable block 14 is connected with the inner wall of the case 13 through the assisted spring 17, acting force in the vertical direction is applied to the movable block 14 through the assisted spring 17, and when the connecting rod 15 moves to the left side of the movable block 14, the assisted spring 17 is subjected to extrusion force; when the connecting rod 15 moves from left to right, the elastic force of the power spring 17 drives the movable block 14 to ascend, and the movable block 14 is better driven to ascend and descend.

Referring to fig. 11, still including the plug detection part, the plug detection part includes electronic box 18, switch 19, circuit breaker 20 and warning light 21 are all installed on the electronic box 18, the inside fixed mounting of machine box 13 has first metal contact piece 22, first metal contact piece 22's rear is equipped with second metal contact piece 23 and tilting mechanism, second metal contact piece 23 through tilting mechanism with first metal contact piece 22 butt, circuit breaker 20's the side of being qualified for the next round of competitions pass through the wire with first metal contact piece 22 is connected, circuit breaker 20's inlet wire side passes through the wire and is connected with second metal contact piece 23, circuit breaker 20 is connected with external power supply electricity, warning light 21 with circuit breaker 20 is connected.

The turnover mechanism comprises a stroke detection plate 26, a rotating shaft 27 and a torsion spring 28, wherein the rotating shaft 27 penetrates through the center of the stroke detection plate 26, two ends of the rotating shaft 27 are rotatably connected with the inner wall of the machine box 13, two sides of the rotating shaft 27 are connected with the inner wall of the machine box 13 through the torsion spring 28, the second metal contact piece 23 is installed at the bottom of the stroke detection plate 26, the stroke detection plate 26 drives the second metal contact piece 23 to be abutted against the first metal contact piece 22 through the rotating shaft 27 and the torsion spring 28, the plug part 2 is provided with a guide protrusion 29, a guide groove 30 matched with the guide protrusion 29 is arranged at the socket shell 3, and when the plug part 2 is completely inserted into the socket part 1, the guide protrusion 29 pushes the stroke detection plate 26 to turn around the rotating shaft 27.

Under the normal state, the torsion spring 28 cooperates with the rotating shaft 27 to drive the stroke detection plate 26 to turn over clockwise, under the action of the torsion spring 28, the first metal contact piece 22 and the top surface of the second metal contact piece 23 keep in contact, the two are in a communicated state, and the warning lamp 21 is normally on; when the plug part 2 is inserted into the socket part 1, the guide protrusion 29 enters the locking assembly 6 along the guide groove 30, when the plug part 2 is not completely inserted into the socket part 1, the lead protrusion cannot contact with the stroke detection plate 26, the warning lamp 21 is normally on, and an operator is reminded that the contact area between the plug part 2 and the socket part 1 cannot meet the design standard; when the plug part 2 is completely inserted into the socket part 1, the lead protrusion pushes the stroke detection plate 26 to turn over anticlockwise, the first metal contact piece 22 is separated from the second metal contact piece 23, the warning lamp 21 goes out, and the warning lamp reminds an operator of being capable of switching on and supplying power, so that the natural heating problem caused by the fact that the contact area of the plug part 2 and the socket part 1 cannot meet the design standard is effectively solved, and the accidents are greatly reduced.

Example two

Referring to fig. 6 to 8, the difference between the first embodiment and the second embodiment is that the plug portion 2 includes a plug sleeve 31 and a locking collar 32, the guide protrusion 29 is disposed on an outer wall of the locking collar 32, the locking collar 32 is sleeved on an outer side of the plug sleeve 31, the locking collar 32 is rotatably connected to the plug sleeve 31, a working slot 33 and an inspection slot 34 are disposed on a surface of the locking collar 32, a plastic spring 35 clamped to the working slot 33 or the inspection slot 34 is disposed on an outer wall of the plug sleeve 31, a text mark of "in inspection" is engraved on an outer wall of the plug sleeve 31, the plastic spring 35 can be pressed, the plastic spring 35 is clamped in the working slot 33 in a normal state, the guide protrusion 29 does not point to the text mark portion, when a pin 38 in the plug sleeve 31 is aligned with a socket 39 in the socket portion 1, the guide protrusion 29 and the guide slot 30 are in the same straight line, and the plug sleeve 31 can drive the socket 38 to enter the socket portion 1 to be abutted to the socket portion 39; when needs overhaul plug sleeve 31, press plastics shell fragment 35 and rotatory locking lantern ring 32, it is rotatory to plastics shell fragment 35 top to overhaul draw-in groove 34, plastics shell fragment 35 bounces under the elastic force effect and overhauls draw-in groove 34 joint, the directional characters sign part of direction arch 29, when contact pin 38 in the plug sleeve 31 aligns with socket part 1 inside socket 39 this moment, direction arch 29 is not in same straight line with guide way 30, inside plug sleeve 31 can't enter into socket part 1, effectively prevent that the maloperation from leading to the electrical shock accident of overhaul of the equipments or the staff of working a telephone switchboard.

The outer wall of the plug sleeve 31 is provided with a U-shaped fixing groove 36, the plastic spring piece 35 is inserted into the fixing groove 36, and after the plastic spring piece 35 is damaged, the locking lantern ring 32 can be taken down, so that the plastic spring piece 35 can be replaced conveniently.

EXAMPLE III

Referring to fig. 9 to 10, the present embodiment is different from the first and second embodiments in that the plug portion 2 includes a plug sleeve 31 and a locking collar 32, the guide protrusion 29 is disposed on an outer wall of the locking collar 32, the locking collar 32 is sleeved on an outer side of the plug sleeve 31, an indication block 37 is disposed behind the guide protrusion 29, the indication block 37 is rotatably connected to the outer wall of the plug sleeve 31, and when the indication block 37 rotates to be located on the same straight line with the guide protrusion 29, the indication block 37 can be inserted into the guide groove 30 along with the guide protrusion 29, so as to complete connection between the plug and the socket; when instruction piece 37 rotates to be T style of calligraphy with guide bulge 29, instruct piece 37 directional "examining and repairing" character sign, instruct piece 37 this moment can be blockked in the socket outside, the plug can' T accomplish with being connected of socket, effectively prevent that the maloperation from leading to the overhaul of equipments or the personnel of working a telephone switchboard electric shock accident.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. The utility model provides a prevent connecting device that electrified was pulled out and is inserted, includes socket part and plug part, socket part includes socket shell and socket protective cover, the one end of socket protective cover with socket shell articulates, be equipped with spacing bayonet socket in the socket protective cover, the inside locking Assembly that is equipped with of socket shell, locking Assembly include with the bolt and the electric power induction mechanism of spacing bayonet socket joint, electric power induction mechanism drive the bolt through the linkage subassembly after sensing electric current with spacing bayonet socket joint, the front end of plug part is equipped with equally can with the spacing bayonet socket of bolt joint, the linkage subassembly includes movable block and horizontally connecting rod, the both sides of movable block with sliding connection from top to bottom of socket shell's inner wall, the bolt is fixed in the top of movable block, the spout of slope is seted up to the left and right sides of movable block, the connecting rod passes the spout just the both ends of connecting rod respectively with the inner wall slip butt of spout, the connecting rod with electric power induction mechanism connects, electric power induction mechanism includes electromagnetic coil, rand, magnetic core and reset spring, be equipped with the machine box in the socket shell, electromagnetic coil fixed mounting be in the machine box, the center of electromagnetic coil is equipped with the guiding hole, magnetic core horizontal slip wears to locate in the guiding hole, the rand is installed the rear end of magnetic core, reset spring overlaps to be established in the magnetic core outside and is located between rand and the electromagnetic coil, the front end of magnetic core with the connecting rod is "T" style of calligraphy and connects.

2. The connecting device for preventing the electric plug and unplug of claim 1, wherein a power spring is further disposed at the bottom of the movable block, and the bottom of the movable block is connected to the inner wall of the case through the power spring.

3. The device of claim 2, further comprising a plug detection component, wherein the plug detection component comprises an electric box, an electric switch, a circuit breaker and a warning light, the electric switch, the circuit breaker and the warning light are all installed on the electric box, a first metal contact piece is fixedly installed inside the box, a second metal contact piece and a turnover mechanism are arranged behind the first metal contact piece, the second metal contact piece is abutted against the first metal contact piece through the turnover mechanism, the outgoing line side of the circuit breaker is connected with the first metal contact piece through a wire, the incoming line side of the circuit breaker is connected with the second metal contact piece through a wire, the circuit breaker is electrically connected with an external power supply, and the warning light is connected with the circuit breaker.

4. The connecting device of claim 3, wherein the turning mechanism comprises a stroke detecting plate, a rotating shaft and a torsion spring, the rotating shaft is disposed through the center of the stroke detecting plate, two ends of the rotating shaft are rotatably connected to the inner wall of the housing, two sides of the rotating shaft are connected to the inner wall of the housing through the torsion spring, the second metal contact piece is mounted at the bottom of the stroke detecting plate, the stroke detecting plate drives the second metal contact piece to abut against the first metal contact piece through the rotating shaft and the torsion spring, the plug portion is provided with a guiding protrusion, the socket housing is provided with a guiding groove matched with the guiding protrusion, and when the plug portion is completely inserted into the socket portion, the guiding protrusion pushes the stroke detecting plate to turn around the rotating shaft.

5. The connecting device of claim 4, wherein the plug part comprises a plug sleeve and a locking sleeve ring, the guide protrusion is arranged on the outer wall of the locking sleeve ring, the locking sleeve ring is sleeved on the outer side of the plug sleeve, the locking sleeve ring is rotatably connected with the plug sleeve, a working clamping groove and an overhauling clamping groove are formed in the surface of the locking sleeve ring, and a plastic elastic sheet clamped with the working clamping groove or the overhauling clamping groove is arranged on the outer wall of the plug sleeve.

6. The device as claimed in claim 5, wherein the plug sleeve has a U-shaped fixing groove on its outer wall, and the plastic spring is inserted into the fixing groove.

7. The connecting device of claim 4, wherein the plug portion comprises a plug sleeve and a locking collar, the guide protrusion is disposed on an outer wall of the locking collar, the locking collar is sleeved on an outer side of the plug sleeve, an indication block is disposed behind the guide protrusion, the indication block is rotatably connected with the outer wall of the plug sleeve, and when the indication block rotates to be located on the same straight line with the guide protrusion, the indication block can pass through the guide groove.